I hope this is a concise version of a much detailed article. At the same time, I'd like to point out the fact how these inter-connections and co-relations are reflected in the physical structure of a city. Interestingly, most western cities are proactively planned or designed, which in turn shaped these connections. On the other hand, most historic cities in Asia have physical structures that have been sequentially built up and nurtured by these connections to what they are today, what is commonly known as organic growth.